Ever wondered just what it takes to fling a vessel into orbit?
It's irrelevant; you don't need to worry about it! What you need to worry about here is catapulting your giant golf ball with the correct velocity and trajectory toward it's intended target.
The aim is to get your ball through the arches on each planet to progress to the next level. Be careful not to overshoot though, as the further away you get from your target, the weaker the gravitational pull!